AK8186B Datasheet, PDF (55/69 Pages) Asahi Kasei Microsystems – Multi Output Clock Generator with Integrated 2.0GHz VCO

AK8186B
Register
Address Bit(s)
(Hex)
Name
VCO Cal
6 _Finished
Description
Read-only register: status of the VCO calibration.
0: VCO calibration not finished
1: VCO calibration finished
0x01F
Holdover
5 _Active
Read-only register: indicates if the part is in the holdover state( see Fig.19).
This is not same as holdover enable.
0: not in holdover.
1: holdover state active.
REF2
4 _Selected
Read-only register: indicates which PLL reference is selected as the input to
PLL.
0: REF1 selected (or differential reference if in differential mode.)
1: REF2 selected.
VCO
3 Frequency
> Threshold
Read-only register: indicates if the VCO frequency is greater than the threshold
(see Table 16, REF1, REF2, and VCO Frequency Status Monitor.).
0: VCO frequency is less than threshold frequency.
1: VCO frequency greater the threshold frequency.
Read-only register: indicates if the frequency REF2 is greater than the
2
REF2 Frequency threshold frequency set by Register 0x1A[6].
> Threshold
0: REF2 frequency is less than threshold frequency.
1: REF2 frequency greater the threshold frequency.
Read-only register: indicates if the frequency REF1 is greater than the
1
REF1 Frequency threshold frequency set by Register 0x1A[6].
> Threshold
0: REF1 frequency is less than threshold frequency.
1: REF1 frequency greater the threshold frequency.
Digital
0 Lock
Detect
Read-only register: digital lock detect
0: PLL is not locked.
1: PLL is locked.
draft-E-02
- 55 -
Sep-2012